TABLE OF CONTENTS BASF AG: Lucalen I
Since they are thermoplastic, Lucalen moldings and film can be welded together by the application of heat and pressure. Examples of the techniques that can be adopted are vibration, ultrasonic, friction, hot gas, and hot plate welding.
Film can be heat sealed by slit-seal, thermal contact, and thermal impulse techniques. The main factors that govern the quality of the seam are temperature, pressure, and time.
Reference: Lupolen, Lucalen Product Line, Properties, Processing, Supplier design guide (B 581 e/(8127) 10.91), BASF Aktiengesellschaft, 1991.
BASF AG: Lucalen I
The ionomers can be heat sealed at temperatures about 20 C (36 F) lower than those required for polyethylene. In addition, they form dense seams because of their high hot tack. Another important property of the ionomers is that the presence of contaminants, for example, liquids, dust, fats, and oils, does not prevent them from being reliably heat sealed.
Reference: Lupolen, Lucalen Product Line, Properties, Processing, Supplier design guide (B 581 e/(8127) 10.91), BASF Aktiengesellschaft, 1991.
DuPont: Surlyn
A study was conducted to determine the bond strength of a representative matrix of plastics and the adhesives best suited to them. The block-shear (ASTM D 4501) test was used because it places the load on a thicker section of the test specimen; the specimen can therefore withstand higher loads before experiencing substrate failure. In addition, due to the geometry of the test specimens and the block shear fixture, peel and cleavage forces in...
